When pirates operated in Japan's Seto Inland Sea around 500 years ago, the largest group, the Murakami Kaizoku, certainly did not fit the conventional image of pirates. They actually protected shipping rather than attacking it. They also had a refined sense of culture and assimilated foreign influences. In this program, broadcaster Peter Barakan meets people who have historical links to, or who have studied, the Murakami Kaizoku, to find out what these unusual pirates were really like.